Just to tell you what's going on before it sort of happens I suppose: Bella is Rosalie's daughter. Year is 2007. Isabella Marie Swan born September 13 1989. Charlie and Renee adopted her after she was left by an anonymous person at the local police station 4 years after Bella was born. November 13. Rosalie was changed 1993 a few days after Isabella disappeared. Is now married to Emmett and lives with the Cullen's. The only thing left with Bella was a bracelet with the Hale crest on it. Bella wears the bracelet everywhere as a memory of the parent(s) she never knew.